The victor will most likely face Ajax in the final in Stockholm on May 24 - the Dutch giants lead Lyon 4-1 on aggregate following the first leg of their semifinal in Amsterdam on Wednesday - and both United and Celta have never won this competition.
Marouane Fellaini scored the decisive goal.
"We had good chances in the first half that we didn't finish", Blind said, according to the Express.
"It's a positive result that leaves us with the advantage, but it's a small advantage", United coach Jose Mourinho said. We suffered, but we are through.
"Now, after 14 matches, we are in the final".
Considering the absentees and the fact Europa League glory offers silverware and Champions League qualification, Mourinho will again rotate with the final in mind. "It would be wonderful".
Manchester United advanced to the final of the Europa League after a 1-1 draw against Spanish side Celta Vigo in the second leg gave the English football giants a 2-1 victory on aggregate.
"In the end, when the game was hard, when they were better than us and we were in trouble and not playing well, it was that mentality, that desire, that togetherness that made the boys fight until the end. Some kept control better than others", he said.
But Facundo Roncaglia reduced the arrears with five minutes remaining before being sent off following a shoving match with Bailly.
"I think it is fair Sergio is going to play the final and David accepts, because he has already played Europa League matches and if we win the trophy, David wins the trophy".
The hosts were then happy to sit back and contain Celta, making the game strangely subdued.
With such a small allocation available United contacted fans earlier this week suggesting that tickets would only be available to season ticket holders who have been to every home cup game this season and those who have applied for a European away game in the last two years.